Antminer S19k Pro vs Antminer S21
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19k Pro | Specification | Antminer S21 |
|---|---|---|
| 120.0 TH/s | Taux de hachage | 200.0 TH/s |
| 2,760 W | Consommation électrique | 3,500 W |
| 23.0 J/TH | Efficiency | 17.5 J/TH |
| 75 dB | Niveau de bruit | 75 dB |
| 12.5 kg | Weight | 14.6 kg |
| 9,417 BTU/hr | BTU Output | 11,942 BTU/hr |
| 84/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S19k Pro
Antminer S21
Based on BTC price of $74,291 and current network difficulty as of Mar 17, 2026. Actual results vary.
Verdict
The S19k Pro was designed as a cost-optimized variant of the S19 generation. How does it stack up against the next-generation S21?
The S21 wins on efficiency by a wide margin. The S19k Pro was built for value, not peak performance, and the generational gap makes the difference even starker.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Antminer S19k ProScore: 84/100. 75 dB noise level.
Best for Efficiency
Antminer S2117.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
What made the S19k Pro different from other S19 models?
The S19k Pro used a different chip binning strategy to achieve lower manufacturing costs. It offers reasonable hashrate at a lower purchase price, trading some efficiency for affordability.
Is the S19k Pro worth buying at used-market prices?
Only at very cheap electricity. The efficiency gap versus the S21 makes the S19k Pro uncompetitive at most power rates.